Machine for coating cloth



(No Model.)

W. H. NASH.

MAGHINBFOR COATING CLOTH.

Patented Dec. 9, 1884.

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WILLIAM H. NASH, OF READING, MASSACHUSETTS.

MACHINE FOR COATING CLOTH.

[JFEGEEICATIQN forming part of Letters Patent No. 309,083, datedDecember 9, 1884.

Application filed May 13, 1884.

To all whom, it may concern.-

Be it known that I, \VILLIAM H. NASH, of Reading, in the county ofMiddlesex and State of Massachusetts, have invented certain Improvementsin Machines for Coating Cloth, of which the following is aspecification.

This invention has for its object to provide improved means for applyingcoating compounds to cloth for the purpose of rendering the clothwater-proof, or partially so.

The invention is intended particularly for use with coating compoundscontaining a considerable proportion of water; and it consists, as awhole, in a machine provided with means for heating the compound andsupplying it hot to the cloth to be coated, rolls for supporting andmoving the cloth progressively, one or more of said rolls being heatedto facilitate the drying of the compound, and a knife or scraper underwhich the cloth passes, and by which the coating compound is thinlyspread upon the cloth.

The invention also consists in certain details, all of which I will nowproceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a top view of an apparatus embodying myimprovements. Fig. 2 represents a section on line w as, Fig. 1. Fig. 3represents a perspective view of one end of the scraper.

The same letters of reference indicate the same parts in all thefigures.

In the drawings, a I) represent two rolls carrying astrip of cloth, 8,to be coated. Said strip is formed into a belt or band having its endscemented together. The roll a is rotated by power applied in anysuitable manner and moves the cloth in the direction indicated by thearrows. The roll I) is hollow, and is heated by steam received through aflexible pipe, 0, connected with one of its ends. The roll a issupported by a fixed frame, 6, and the roll 6 by a frame, f, which ismovable on tracks or ways toward and from the frame 6, so that after thecloth is formed into a band it can be stretched or tightened by movingthe frame f away from the frame 0. To this end a drum,

h, is provided, mounted in fixed bearings and having a rope or chain, i,connected to its pe- The drum may riphery and to the frame f.

(No model.)

be rotated by means of a crank or lever to draw the frame f toward it,and is held by a ratchet and dog or other suitable means to prevent theframef from moving in. the opposite direction.

j represents a tank for the coating compound. Said tank is surrounded bya water jacket or space, it, under which is placed a heater, Z, which ispreferably a small oil-stove, a bracket or shelf, at, being provided tosupport the same.

From the tank j extends downwardly a discharge-spout, j, extendingacross the tank, and terminating close to the cloth to be coated. Thewater-jackct extends nearly or quite to the bottom of thedischargespout. A slide or gate, it, enables the compound to be shut offfrom or allowed to flow through the dis charge-spout whenever desired.

Under the discharge-spout, and supported in an inclined position inslotted standards 0 0 on the frame e, is a board, p, having a metallicknife or blade, 1), of sufficient length to extend entirely across theweb of cloth, and arranged at such height as to deflect the clothdownwardly between the roll a and an idle supportingroll, r, on theframe 6, the cloth and the front side of the knife forming a reentrantangle or trough, into which the coating compound falls from the spout j.The knife is provided at its ends with wings or end pieces, a a, whichconfine the accumulated compound and prevent it from running off fromthe edges of the cloth, excepting in small quantities close to thescraping-edge of the knife,smallapertures a being formed by rounding thewings was shown in Fig. 3, so that small quantities of the compound canpass over the edges of the cloth and coat the portions of the clothwhich pass under the wings or end pieces, the surplus compound fallinginto receptacles o.

It is essential that the cloth be wider than the space between the endpieces, in order that the compound may be properly retained, and theprovision of the small orifices a insures the coating of the parts ofthe cloth that are not subjected to the compound lying between the endpieces.

It will be seen that the compound is heated in the tank j and deliveredin a hot condition passed around until it receives a coating of thedesired thickness, each successive addition to the coating being driedbefore the next is applied. It will be seen, therefore, that necessityof waiting for the coatingto dry is entirely avoided.

I do not limit myself to'the employment of my improved apparatus forso-callcd water compounds, as it may be used to facilitate the drying ofcompounds containing volatile solventssuch as naphtha. It may, in fact,be used in the manufacture of gossamer waterproof material and theproducts commonly known as leatherettes.

A pressure or calendering roll, r, may be brought to bear on the clothover the roll 0, to

compact the coating after it has passed the roll -b and before itreceives its next addition.

I claim- 1. The combination, in a cloth-coating machine, of the tankhaving a discharge-spout and a heater, the steam-heated roll I), and itscompanion roll a, arranged to support and move an endless belt of clothunder said discharge-spout, said heated roll serving also to dry theheated compound supplied to the fabric by the heated tank, whereby theendless band of cloth is enabled to be kept rapidly and continuously inmotion until it receives a coating of the desired thickness, as setforth.

2. The combination, with the cloth-moving rolls, of the spreading-knifeand the tank j, having a dischargespout, said tank and spout beingsurrounded by a water-jacket and placed above the knife, substantiallyas described.

3. The combination, in a cloth-coating ma chine, of the clothmovingrolls a b, the latter mounted in a movable frame, mechanism,substantially as described, to hold said frame, the

spreading-knife, and the jacketed tank above said knife, allsubstantially as described.

4. The knife provided with end pieces, u, a, having openings a a, as setforth.

In testimony whereof I have signed myname to this specification,in thepresence of two subscribing witnesses, this 9th day of May-1884.

WILLIAM H. NASH.

Witnesses:

G. F. BROWN, A. L. WHITE.

